<div dir="ltr"><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small"><br></div><br><div class="gmail_quote"><div dir="ltr">On Mon, Aug 6, 2018 at 9:14 AM Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Quoting Anuj Phogat (2018-08-03 20:24:09)<br>
> <br>
> <br>
> On Mon, Jul 30, 2018 at 5:07 AM Mika Kuoppala <<a href="mailto:mika.kuoppala@linux.intel.com" target="_blank">mika.kuoppala@linux.intel.com</a>><br>
> wrote:<br>
> <br>
> The register for 0xe420 is unable to hold any value, including<br>
> this bit. The documentation is also mixed between having a<br>
> register bit for toggle and having a state command setup<br>
> for it. Apparently the register toggle is deprecated.<br>
> <br>
> <br>
> CACHE_MODE_SS is not listed in<br>
> a<br>
> gfxspecs table <br>
> which lists all<br>
> user mode<br>
> non-privileged registers. So,<br>
> do you think<br>
> making any changes<br>
> to the register<br>
> from mesa will hold?<br>
<br>
No, a privileged write to the register from inside the ring didn't<br>
stick, so something is amiss.<br></blockquote><div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small;display:inline">ok. Mika's commit message confused me where he mentioned</div></div><div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small;display:inline">about adding back the state </div><span style="font-family:verdana,sans-serif">setup </span><span style="font-family:verdana,sans-serif">for this bit in mesa. <div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small;display:inline">But, as</div></span></div><div><span style="font-family:verdana,sans-serif"><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small;display:inline">I understand now the changes won't stick in the register. So,</div></span></div><div><span style="font-family:verdana,sans-serif"><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small;display:inline">no changes required in mesa.</div></span></div><div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small;display:inline"><br></div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
-Chris<br>
</blockquote></div></div>